All ABC News broadcasts and platforms are delivering the latest updates on the ongoing investigation as well as the stories of those who witnessed the tragic attack.

“World News with Diane Sawyer” will have the latest on the investigation during a special one-hour edition of the broadcast which will include reports from ABC’s team in Boston as well as Chief National Correspondent Byron Pitts, Chief Global Affairs Correspondent Martha Raddatz, Chief White House Correspondent Jonathan Karl, Senior Justice Correspondent Pierre Thomas and Senior National Correspondent Jim Avila.

“Nightline” will originate from Boston with Terry Moran anchoring from there. The program will feature reports by Brian Ross and John Donvan.

On Monday, two small but powerful bombs exploded at the finish line of the Boston Marathon, and 24 hours later no one has claimed responsibility for what authorities have labeled a “terrorist” attack. FBI says the investigation will be worldwide: “We will go to the ends of the earth to find subject or subjects responsible for this despicable crime,” said FBI Special Agent in Charge Richard DesLauriers.

For the latest information on ABC’s coverage of this story click here.

When did we start milking tragedies like this? It’s in really poor taste. We have all the information that is available right now, yahoo are running about 28 stories on it nonstop. Out of respect for the victims and their families, the networks and “news” sites really need to take a step back, in my opinion.

Fred

1979, the Iran Hostage situation.
That was the beginning of Nightline.